Scrubbing-machine.



H. F. AGKERMAN.

SGRUBBING MACHINE.

, APPLIOATION FILED AUG. 4, 1908.

Patented Oct 19, 1909..

2 8HBETS-SHEBT 1.

H. i". AOKERMAN. SGRUBBING MACHINE. APPLICATION FILED AUGv 4, 1908.

Patented Oct 19, 1909.

2 SHEETS-4831GT 2,

it will UEED PATENT OFFICE.

HARMON F. ACKERMAN, 0E CLEVELAND. OHIO.

I SCRUBBING-MACHINE.

Specification of Letters Patent.

Application filed'August 4, 1908. Serial No. 446.887.

To all whom it may concern:

lie it known that I, I'lARMON F. 'Acknnu.\.\', a citizen of the United States, residing at Cleveland, in the county of Cu'yahoga and State of Ohio, have invented certain new and useful Improvements in Scrubbing-lilachines, and do declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appcrtains to make and use the samef My invention relates to an improvement in scrubbing machines, and the invention consists in the construction and combination of parts, substantially as shown and described and particularly pointed out in the claims.

In the accompanying drawings, Figure 1 is a side elevation of the machine. Fig. 2 is a plan view of the drain trough about the scrubbing brushes or rolls. Fig. 3 is a plan view of .the scrubbing rolls and of a portion of the driving means therefor partially in section. Fig.4 is an enlarged longitudinal sectional elevation of the machine, and Fig. 5 is an enlarged section or portion of the endless elevator which carries away the dirty water from the drain trough.

As thus shown the machine, or rather the scrubbing parts of the machine, are power driven from an electric or other .motor M,

, mounted on the rear of the machine, and the is rigid.

machine is handled on the floor by means of disposed scrul'ibing brushes or rolls Band l t. The said brushes are cylindrical in shape, and have a length equal to the full width of the main frame and are provided with hearings in the lower portions or legs 2 of the said frame. Both brushes are driven alike from motor M by sprocket chain m running over sprocket wheel n fixed on power driven shaft S, and thence from sprocket wheel 3 on said shaft and chain C thereon operatively engaging the smaller sprocket wheels I) and b respectively of the respective scrubbing rolls 1% and B", the idler I serving as a take-up for the said cham.

The rol-ls B and B are arranged to work inward toward-each other, so that as they. travel over the floor together they sweep one toward theother, and while roll B runs over the unscrubbed portion and throws the water and dirt inward toward roll B, the roll B catches up these sweepings and carries them forward toward roll B, so that they two .br'ushes play against eachother in their work and while both work on a thoroughly moistened surfacethey can do more effective work in this way than if they rotated in the same direction, as is obvious. It is plannedthat" Patented Qct. 19, 1909;

they shall also cooperate in gathering up the dirt laden'water and deposit the same in a.

trough provided for this purpose and the rcverse rotation of the rolls contributes to this end. Hence I have provided a frame shaped trough D about the said rolls, all portions of which are adapted to catchwater carried up or over by the rolls and which trou 'h lies close to the rolls at their sides'and on s and is especially provided'with a middle portion (Z of greater width than the sides thereof and which receives the water deposited in the other portions of the said trough as well as that thrown directly thereinto by the brushes and from which the water is lifted to the basin or receptacle E above and passes thence by spout 5 into tank T-which is separate and removable. I The lift mechanism comprises endless chains 6 and trough shaped brackets 7 fixed at their ends to said chains and'having a length equal approximately to three-fourths of the said trough frame D, more or less.

The said chains 6 run over sprocket wheels 8 and 9top'and bottom respectively of the upright frame or posts 10, rigid with the main frame,- and ower is applied to said endless chain and ucket carrier by a chain or belt 12 from sprocket wheel or sheave 13 on shaft S'to wheel 14 on shaft 15 which car'- rics the sprocket wheels 8 above.

It is seen from-the foregoing that buckets 7 dip arid fill in central troulghd, and the i plan is to gather u at least 1'. e bulk of the scrubbing water a ter it has done its work and which is played back and forth between rolls Band B, and the more thus gathered The complete operat on, 15 I 10 up the better.

such as to leave the floor practice ly clear of water as it is passed over by the machine,

and'what remains can easily be dried off in w some other way. When tank T is filled it can be removed by hand and emptied.

It is to be understood from the foregoing that the work of the machine is performed by power, including removal from the floor of the water used by the machine, and all that the operator has to do is to traverse the machine over the floor such as he would a lawn mower, and thissis easily done. If desired to reverse the machine he can tilt it on its wheels W so as to lift the scrubbing rolls entirely from the floor. but while at work the entire front weight is permitted to rest down upon the rolls and thus contribute to their efiiciency.

Suitable shields or covers 10 are provided over the rolls B and B, and which are inclosed about their vertical side edges by the vertical flanges 17 of the trough or draining member D, and the said draining or trough member is suspended from main frame F by screw rods 20, or their eqnivalenh thus being made removable for cleansing; and also permitting adjustment of the trough memer in respect to the brush rolls and the buckets on chains 6.

. around both rolls and having a branch exending between said rolls open at its ends to communicate with the portion of: said 5 trough at the ends of the rolls.

2. A scrubbing machine comprising a pair of rerersely rotating scrubbing rolls, an end less trough about the outside of said rolls having a branch'b'e'tween its sides open across its top between said rolls and coinn'mnicating with the sides thereof, and a lifting mechanism adapted to dip into said branch and raise the water therefrom. and hoods over the outer portion of said trough.

3. A floor scrubbing machine comprising; a main frame and a pair of scrubbing rolls and power connections to drive the same, in combination with a rectangular trough extending front and rear and across the ends of both rolls and having a branch portion between the rolls to receive the water lifted by the rolls and open to the sides of? the trough at its ends, and means removably supporting said trough from the main frame about said rolls.

4. A scrubbing machine having a main frame. a set of scrubl'iing rolls therein, an endless trough detachably suspended from said main frame and extending along the outer sides and ends of said rolls and an uncovered branch thereof between the rolls in open comnmnication with the sides of said trough, and hoods for said rolls mounted on said trough to cover the same and. adapted to discharge water dashed thereon within said trough.

In testimony whereof I sign this specification in the presence of two witnesses.

Witnesses If). M. Eisner, R. B. Mosna.

(ill 

